What is the difference between Mongodb and Elasticsearch?

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Tags

1. #distributed
2. #complex
3. #backed
4. #lucene
5. #queries
6. #based
7. #content
8. #nosql
9. #engine
10. #mongodb
11. #databases
12. #elasticsearch
13. #where
14. #general
15. #practice
16. #purpose
17. #doing
18. #database
19. #together
20. #storage
21. #search
22. #persistent
23. #often